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Introduction and Overview <br />Tree Report <br />Hidden Canyon <br />Pleasanton CA <br />Ponderosa Homes is planning to develop the Hidden Canyon project {the Lester and <br />Shriner properties) located in Pleasanton CA. Most of the project site is undeveloped <br />although two residences and associated out-buildings are present. In August 2019, <br />HortScience I Bartlett Consulting, divisions of the F.A. Bartlett Tree Expert Co., prepared <br />a Tree Report for the site. During revision of ·improvement plans for Dublin Canyon <br />Road, the need for additional tree assessment revealed. Ponderosa Homes requested <br />that HBc update the Tree Report. This report provides the following information: <br />1. /,l;. survey of trees currently growing on the site. <br />2. An assessment of the impacts of constructing the proposed project on the trees <br />based on the proposed tentative map and site plan, and plan for Dublin Canyon <br />Road improvements prepared by RJA {project engineers) dated November 9, <br />2020. <br />3. Recommendations for action. <br />4. Estimate of tree value. <br />5. Guidelines for tree preservation during the design, construction and maintenance <br />phases of development. <br />Assessment Methods <br />Trees #1 -171 were assessed in December 2014. Trees #172 -208 were added in <br />November 2020. The scope encompassed all trees over 6" in diameter located within the <br />proposed limits of grading. The assessment procedure consisted of the following steps: <br />1. Identify the tree as to species. <br />2. Attach a numerically coded metal tag to the trunk of each tree. Tree tag numbers <br />were not continuous. <br />3. Record the tree's location on a map. <br />4. Measure the trunk diameter at a point 54" above grade. <br />5. Evaluate the health and structural condition using a scale of 0 - <br /> <br />5 <br /> <br />where 0 = <br />dead, 1 = poor and 5 = excellent condition. <br />5. Comment on presence of defects in structure, insects or diseases and other <br />aspects of development. <br />6. Assess the tree's suitability for preservation as low, moderate or high. <br />Access to some trees was limited by several factors including steep slopes and/or <br />extensive vine and shrub growth. Trees that could not be accessed were given a tree <br />number but no tag was attached to the trunk. Where vines prevented visual inspection of <br />the lower trunk and base, it is noted in the Tree Assessment Form. <br />Results for individual trees are located in the Tree Assessment Form {see <br />Attachments). Tree locations are noted by tree tag number in the Tree Assessment <br />Plan.